title: Prevalence and gender patterns of mental health problems in German youth with experience of violence: the KiGGS study.
abstract: BACKGROUND
  Research examining mental health in violence-affected youth in representative samples is rare. Using data from the nationally representative German Health Interview and Examination Survey for Children and Adolescents (KiGGS) this study reports on gender-specific prevalence rates and associations of a broad range of internalizing and externalizing mental health problems: emotional problems, conduct problems, ADHD, disordered eating, somatic pain and substance use in youth variously affected by violence. While internalizing is generally more common in girls and externalizing in boys, observations of prior non-normative studies suggest reverse associations once an individual is affected by violence. The occurrence of such "gender cross-over effects" is therefore examined in a representative sample.
  
  
  METHODS
  The sample consisted of 6,813 adolescents aged 11 to 17 from the German Health Interview and Examination Survey for Children and Adolescents (KiGGS): Applying multivariate logistic regression analyses, associations between each type of violence history and mental health indicator were determined for perpetrators, victims, and perpetrating victims of youth violence. Moderating effects of gender were examined by using product term interaction.
  
  
  RESULTS
  Victim status was associated primarily with internalizing problems, while perpetrators were more prone to externalizing problems. Perpetrating victims stood out with respect to the number and strength of risk associations with all investigated mental health indicators. However, the risk profiles of all violence-affected youth included both internalizing and externalizing mental health problems. Gender cross-over effects were found for girls and boys: despite lower overall prevalence, girls affected by violence were at far higher risk for conduct problems and illicit drug use; by contrast, somatic pain, although generally lower in males, was positively associated with perpetrator status and perpetrating victim status in boys. All violence-affected youth exhibited significantly higher rates of cumulative mental health problems.
  
  
  CONCLUSIONS
  The results highlight the importance of violence for the mental health of youth. They reveal a particular vulnerability as a function of gender. Implications for policy making, clinical practice and research are discussed.
authors.affiliation: Department of Epidemiology and Health Monitoring, Robert Koch Institute, General-Pape-Strasse 62-66, 12101 Berlin, Germany. schlackr@rki.de
authors.forename: Robert
authors.initials: R
authors.lastname: Schlack
authors.forename: Franz
authors.initials: F
authors.lastname: Petermann
mesh_terms: D000293:Adolescent; D002648:Child; D015897:Comorbidity; D019955:Conduct Disorder / Q000453:epidemiology*; D019548:Crime Victims / Q000523:psychology / Q000706:statistics & numerical data*; D005260:Female; D005858:Germany / Q000453:epidemiology; D006305:Health Status Indicators; D006306:Health Surveys; D006801:Humans; D007407:Interviews as Topic; D016015:Logistic Models; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D010808:Physical Examination; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors; D014754:Violence / Q000523:psychology* / Q000706:statistics & numerical data